Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 552 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s idea — density, dissolving, capillary action, light bending, air pressure, push-back, air resistance or condensation. 3. For a fair-test question, find what is changed, kept the same and measured. 4. For a safety question, choose what keeps everyone safe.

1. 1.🔍 Which is the odd one out? (a) a bicycle pump (b) a suction hook (c) a medicine dropper (d) a fridge magnet
2. 2.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) near a plug point (c) over a sink or bucket (d) over a laptop
3. 3.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the length of the stem (c) the amount of water (d) the kind of flower
4. 4.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) sand (c) air (d) smoke
5. 5.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) lick your fingers (d) wash your hands
6. 6.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) it turns to ice (b) the water increases (c) some water evaporates (d) it turns to salt
7. 7.🧺 Which of these is needed for the water cycle bowl? (a) ice cubes (b) a magnet (c) a balloon (d) turmeric powder
8. 8.🚀 Which of these goes forward? (a) air from the balloon (b) gas from the rocket (c) water a swimmer pushes (d) the balloon
9. 9.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
10. 10.💧 Which of these does not let water climb? (a) a sugar cube (b) a glass marble (c) a piece of chalk (d) a strip of cloth
11. 11.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the amount of clay (b) the kind of clay (c) the shape of the clay (d) whether it floats
12. 12.🌈 How many colours do we name in a rainbow (VIBGYOR)?
13. 13.🧺 Do we need a balloon for the dissolving test? (a) needed (b) not needed
14. 14.🔍 Which is the odd one out? (a) a feather (b) a paper helicopter (c) a coin (d) a toy parachute
15. 15.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) yeast (b) water (c) sunlight (d) cling film
16. 16.True or false: a balloon is needed for the paper helicopter. (a) True (b) False
17. 17.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the same three liquids”? (a) we measure it (b) we keep it the same (c) we change it
18. 18.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a glass of water (c) a battery cell (d) a towel
19. 19.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) True (b) False
20. 20.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a glass of water (d) a magnet
22. 22.🚀 In “push back, move forward”, which way does the rocket go? (a) goes backward (b) goes forward
23. 23.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) True (b) False
24. 24.🛟 Where is a safe place to drop the helicopter from? (a) a roof edge (b) a high window ledge (c) from your raised hand (d) a wobbly chair
25. 25.🔍 Sand is stirred into water. What do you see after a while? (a) it dissolves (b) it floats up (c) it turns blue (d) it settles at the bottom
26. 26.🧺 Which of these is needed for the paper helicopter? (a) yeast (b) a pencil (c) a balloon (d) a magnet
27. 27.🚁 Which of these falls slowly through the air? (a) a stone (b) a coin (c) a crumpled paper ball (d) a toy parachute
28. 28.True or false: a paper clip is not needed for the paper helicopter. (a) True (b) False
29. 29.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) how big we blow it (b) the same straw (c) distance it travels
30. 30.True or false: water a swimmer pushes goes forward. (a) True (b) False
31. 31.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
32. 32.🛟 Does a dry leaf float or sink in water? (a) floats (b) sinks
33. 33.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it is hotter (d) it will not break
34. 34.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
35. 35.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the glass breaks (c) the card flies away (d) the card stays on
36. 36.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar in icy water (c) sugar left unstirred (d) sugar in warm water
37. 37.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a glass of water (d) a battery cell
38. 38.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we measure it (b) we keep it the same (c) we change it
39. 39.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is what we measure. (a) True (b) False
40. 40.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) all of it dissolves (b) the sugar turns to salt (c) some stays undissolved (d) the water turns solid

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